If there's one band that truly embodies anti-commercialism, it's Emperor. Generally regarded as the one true master of the Norwegian-bred black metal art form, the band concocts a staggeringly violent whirlwind of carefully constructed noise resulting in nigh-impermeable records piled high with complex arrangements and heart-bursting violence. So it's no surprise that, for its swan song, the band would issue Prometheus, a birth-to-death concept album of such weight and density that it takes roughly two dozen listens to even begin to appreciate the depth of its composition and its painstaking attention to detail.